Tubothalamea

Belongs within: Foraminifera.Contains: Ammodiscana, Spirillinana, Miliamminana, Endothyroida, Cornuspirida, Nubeculariida, Miliolina. The Tubothalamea are a clade of bi- or multi-chambered foraminiferans in which test chambers are tubular, at least in the juvenile stage. Both agglutinated and calcareous forms are included in the clade. In members of the order Spirillinida, the test is composed of a spherical… Continue reading Tubothalamea

Cymbaloporidae

Belongs within: Spirillinana. The Cymbaloporidae are a group of trochospiral Foraminifera known from the Upper Cretaceous to the present day. Later chambers form annular series in a single flat or conical layer, with numerous apertures and variously arranged circular pores (Loeblich & Tappan 1964). <==Cymbaloporidae |–Pyropilus Cushman 1934LT64 | `–*P. rotundatus Cushman 1934LT64 |–Gunteria Cushman & Ponton 1933LT64 | `–*G. floridana… Continue reading Cymbaloporidae

Involutinidae

Belongs within: Spirillinana. The Involutinidae are a Mesozoic assemblage of foraminiferans with a tubular, enrolled test (Loeblich & Tappan 1964). Characters (Loeblich & Tappan 1964): Test tubular and enrolled, with secondary deposits in umbilical region on one or both sides; wall calcareous perforate, lamellar, microgranular. <==Involutinidae [Involutininae] |–Bancilina Neagu 1995M13 |–Neohemigordius Wang & Sun 1973HW93 |–Hensonina Moullade & Peybernes… Continue reading Involutinidae

Endothyrinae

Belongs within: Endothyroida. The Endothyrinae are a group of enrolled foraminifera known from the Upper Devonian to the Permian. The plane of coiling of the test often changes during growth, sometimes gradually (plectogyral growth) or sometimes with an abrupt turn of up to 90°. Members of the genera Endothyranella and Rectoseptaglomospiranella become uncoiled and rectilinear… Continue reading Endothyrinae

Archaediscidae

Belongs within: Spirillinana. The Archaediscidae are a group of fusulinid Foraminifera known from the Lower Carboniferous to the Permian. The test is streptospirally coiled in early stages in the genus Archaediscus, becoming nearly planispiral in later stages. Other genera are planispirally coiled for the greater part of (Brunsia) or throughout (Permodiscus) the test (Loeblich &… Continue reading Archaediscidae

Chernyshinelloidea

Belongs within: Endothyroida. Teardrops in the Palaeozoic Published 29 July 2022 Among the early major radiations of foraminiferans in the Palaeozoic era was the assemblage known as the endothyroids, regarded by most researchers as the fore-runners of the iconic fusulinoids*. Like fusulinoids, endothyroids had test walls constructed of microgranular calcite, but generally had a simpler… Continue reading Chernyshinelloidea

Rugosofusulinidae

Belongs within: Fusulinoida. Rugosofusulinids? Published 14 March 2020 We return once again to the fusulinoids, large, complex Foraminifera of the late Palaeozoic. For this post, I’m taking a look at the Rugosofusulinidae, a group known from the last part of the Carboniferous and the earliest part of the Permian. Or to put it more technically,… Continue reading Rugosofusulinidae

Spirillinana

Belongs within: Tubothalamea.Contains: Patellinida, Spirillinidae, Cymbaloporidae, Involutinidae, Lasiodiscidae, Tetrataxidae, Archaediscidae. The forams that bind Published 18 December 2017 Here we see an example of Fabiania. Fabiania is a genus of foraminiferan known from the Eocene epoch that could reach a relatively large size as forams go, up to several millimetres across (nowhere near as large… Continue reading Spirillinana

Endothyranopsidae

Belongs within: Loeblichiidae. The Endothyranopsinae are a group of planispiral forams known from the Lower Carboniferous (Loeblich & Tappan 1964). <==EndothyranopsidaeM13 |–NeoendothyrinaeM13 | |–Neoendothyra Reitlinger 1965R-CB96 | | |–*N. reicheli Reitlinger 1965R-CB96 | | `–N. consuetaR-CB96 | |–Linendothyra Mamet 1992R-CB96 | | |–*L. jiheensis (Lin 1985) [=Neoendothyra jiheensis]R-CB96 | | `–L. politaR-CB96 | `–‘Timanella’ Reitlinger… Continue reading Endothyranopsidae

Quinqueloculininae

Belongs within: Miliolina. The Quinqueloculininae are a group of miliolid Foraminifera known from the Jurassic to the present, with a simple wall and an aperture with a bifid tooth or modification of such (Loeblich & Tappan 1964). QuinqueloculininaeLT64 |–Pateoris Loeblich & Tappan 1953S-VC91 | `–*P. hauerinoides (Rhumbler 1936) [=Quinqueloculina subrotunda f. hauerinoides]LT64 |–Cruciloculina d’Orbigny in… Continue reading Quinqueloculininae